SUSE SLED15 / SLES15 Security Update : openssl-1_1 (SUSE-SU-2018:2956-1)

high Nessus Plugin ID 120114

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Synopsis

The remote SUSE host is missing one or more security updates.

Description

This update for openssl-1_1 to 1.1.0i fixes the following issues :

These security issues were fixed :

CVE-2018-0732: During key agreement in a TLS handshake using a DH(E) based ciphersuite a malicious server could have sent a very large prime value to the client. This caused the client to spend an unreasonably long period of time generating a key for this prime resulting in a hang until the client has finished. This could be exploited in a Denial Of Service attack (bsc#1097158)

Make problematic ECDSA sign addition length-invariant

Add blinding to ECDSA and DSA signatures to protect against side channel attacks

The update package also includes non-security fixes. See advisory for details.

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or 'zypper patch'.

Alternatively you can run the command listed for your product :

SUSE Linux Enterprise Module for Basesystem 15:zypper in -t patch SUSE-SLE-Module-Basesystem-15-2018-2083=1

Plugin Details

Severity: High

ID: 120114

File Name: suse_SU-2018-2956-1.nasl

Version: 1.4

Type: local

Agent: unix

Family: SuSE Local Security Checks

Published: 1/2/2019

Updated: 7/10/2024

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS Score Source: CVE-2018-0732

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:libopenssl1_1-hmac, p-cpe:/a:novell:suse_linux:libopenssl-1_1-devel, p-cpe:/a:novell:suse_linux:libopenssl1_1-debuginfo, p-cpe:/a:novell:suse_linux:libopenssl1_1-32bit-debuginfo, p-cpe:/a:novell:suse_linux:openssl, p-cpe:/a:novell:suse_linux:openssl-1_1-debugsource, p-cpe:/a:novell:suse_linux:openssl-1_1-debuginfo, p-cpe:/a:novell:suse_linux:libopenssl1_1, cpe:/o:novell:suse_linux:15

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/SuSE/release, Host/SuSE/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 9/30/2018

Vulnerability Publication Date: 6/12/2018

Reference Information

CVE: CVE-2018-0732

Detections

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